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Hello all – I have the Arc Ultra set up through my LG Oled55B6P HDMI ARC port. I have an odd issue where every time my TV turns off, if it is not on the ARC HDMI port the Ultra is connected to, the Ultra gets disconnected. The only way to get the Ultra to work again is to switch the HDMI port back to the ARC HDMI channel. For instance, if I turn on my TV after previously playing PS5 through HDMI port 3, it will not have any sound until I switch temporarily back to the ARC HDMI port (2). Then I go back to the PS5 and it works fine. Also if I then switch to another HDMI port while the TV is on after the Ultra is already connected, it also works fine (e.g. after playing PS5 I switch to the Chromecast HDMI channel (1) ).
 

I’ve tried turning off CEC and that doesn’t work. Would appreciate any suggestions or fixes. Perhaps it’s an issue with the Arc Ultra not waking up?

 Thanks

 


 

That seems odd, if I’m understanding it properly, but I don’t think the issue is with Sonos, but with your TV. I’d be tempted first to check for updates of the TV’s firmware, then reboot it, by unplugging it from the wall for two minutes. That should force it to reload its OS, and hopefully fix the issue you’re experiencing. 

If you wanted to, you could do the same with the Arc Ultra, but I don’t think it would make any difference. 

I recommend disconnecting all of the HDMI cables while rebooting. Reconnect the ARC and TV first. After they have negotiated, then connect the others.

Thanks for the suggestions. I think the issue does stem from the TV. The TV firmware is up to date and I tried rebooting it and plugging all the hdmi cables back in but that didn’t work. What did work oddly was turning on the TVs “QuickStart” function where when I turn the tv “off”, it only enters a light rest mode and doesn’t fully shut off. This is the best workaround I have for now so will just stick with this until I get a new tv as it keeps the Arc connected. 

This is interesting as I am having almost an identical issue - I have a Sony Bravia 3 purchased this year - I have a Sony XBR that i bought several years ago (circa 2018) and do not have the same iissue with the Sonos ARC on that setup

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